@Jarkes
Robin is pretty popular in both genders. It mostly seems to go down to whether you want to be Lucina’s husband, or Lucina’s mother.
Definitely much more even than Corrins, where most people hate the male but love female (much better design and a general feeling of Corrin’s naive, gentle nature fits more with female), and Byleth’s, where people are kinda neutral on the male but like female (which is ironic, considering how many people disliked F!Byleth’s design when it was first revealed; I think being able to romance all three lords, having more same gender romance options in general, and the 200% are the reasons here).
Also, that’s definitely M!Corrin in the picture.